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bpo-30532: Fix whitespace folding in certain cases

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Leading whitespace was incorrectly dropped during folding of certain lines in the _header_value_parser's folding algorithm.  This makes the whitespace handling code consistent.
This commit is contained in:
Joel Hillacre 2017-06-26 15:41:35 -06:00 • committed by R. David Murray
parent f84ac420c2
commit b350c22ebc
4 changed files with 15 additions and 3 deletions
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4
Lib/email/_header_value_parser.py
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@ -341,9 +341,7 @@ class TokenList(list):
# avoid infinite recursion.
ws = part.pop_leading_fws()
if ws is not None:
# Peel off the leading whitespace and make it sticky, to
# avoid infinite recursion.
folded.stickyspace = str(part.pop(0))
folded.stickyspace = str(ws)
if folded.append_if_fits(part):
continue
if part.has_fws: